求教数学、、、

Chloeeee · 发表于 2012-5-13 10:48:14

1、Last Sunday a certainstore sold copies of Newspaper A for $1.00 each and copies of Newspaper Bfor $1.25 each, and the store sold no other newspapers that day. If r percent of the store’s revenuesfrom newspaper sales was from Newspaper A and if p percent of thenewspapers that the store sold were copies of newspaper B, which of the following expresses r in terms of p?

A. 100p /(125 – p)
B. 150p /(250 – p)
C. 300p /(375 – p)
D. 400p /(500 – p)
E. 500p /(625 – p)

求教数学、、、

所属分类: GMAT考试

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